Blyton, Enid <br/><br/>
Secret seven on the trail 

 - London  Hodder Children's  2002 
 - 138 
 - The Secret Seven .
<br/><br/> An enduringly popular series, now with fun new covers! Is something mysterious happening at Tigger&#39;s Barn? Peter thinks it&#39;s a hoax. Then Jack overhears an extraordinary conversation which lead the Seven on a trail of adventure! 
<br/><br/><label>ISBN: </label>9780340796399 
<br/><br/><label>Dewey Class. No.: </label>823  / BLY-S